Executed when the right mouse button is clicked. The default implementation of
this method auto-creates a Menu
from the contextMenu
property on
this component and then calls Menu.showContextMenu()
on it to show it.
If you want to show a standard context menu, you can simply define your Menu and set it as the
contextMenu property on your component - you do not need to override this method.
If you want to do some other processing before showing a menu or do something else entirely, then
you should override this method. Note that the return value from this method controls whether or
not the native browser context menu is shown.
- Parameters:
handler
- the showContextMenu handler
- Returns:
HandlerRegistration
used to remove this handler